Hi Kevin, Thanks for replying. ----- Original Message ----- From: "Kevin Stevens <[EMAIL PROTECTED]>" To: To Stacey Roberts Date: Sat, 12 Jun, 2004 20:11 BST Subject: Re: NAT vs Public IP Range info needed, please
> > On Jun 12, 2004, at 09:46, Stacey Roberts wrote: > > >The ISP's DSL package includes 8 static ip addresses: - > >1 - network addr > >1 - broadcast addr > >1 "router" address > >5 usable ip addresses > > >The -redirect_address syntax is as follows: > >-redirect_address localIP publicIP > >localIP The internal IP address of the LAN client. > >publicIP The external IP address corresponding to the LAN > >client. > > >What I would like to know is if it is possible to do to following: - > >Given that the 5 usable public IP's are: 22.214.171.124, 126.96.36.199, 188.8.131.52, > >184.108.40.206 & 220.127.116.11 > >1] G'Way host is assigned its own public IP - 18.104.22.168 > >2] LAN hosts' (all) traffic is NAT'd using one of the other public > >IP's - 22.214.171.124 > >3] Remaining 4 public IP addresses are left to be used other purposes > >(eg: "true" address redirection to a DMZ-host, that is not a member of > >the internal LAN subnet) > > Not sure I understand (it would help if you used a real public /29 to > illustrate, your example doesn't follow legal subnet rules). in 1) > above, the gateway host ip has to come out of the usable address pool, > which you designate .4 - .8. So in 1) you could have the gateway IP as > .4. In 2) You have .5 assigned for many-one NATing (in the Linux world > they'd call this ip masquerading). In 3) you'd have THREE public > addressed left that could be used for one-one NAT. Well.., despite the actual IP addresses used, you've got the general picture correct there. What I'm after is to be able to define an IP address that is *not* that which is assigned to the publicly-facing interface of the gateway as the nat ip address for internal lan hosts. > > >As you see, the g'way's public ip is not being used for NAT'ing > >internal hosts' outgoing traffic, but another ip from within the > >assignied public ip address range. My reading of the NAT chapter does > >not suggest that there is a way to define the public IP with which > >traffic is to be translate. Is this functionality not supported, or > >have I missed something when reading the various sections? > > It is AFAIK, they just don't use it in the example. I've seen your follow-up mail arrive, where you've included the pointer to the alias -switch to natd(8). Cheers for that.., I'll have a read and try to work this out. Thanks again for taking the time. Regards, Stacey > > KeS > > _______________________________________________ > [EMAIL PROTECTED] mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "[EMAIL PROTECTED]"
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